<com:TContent ID="Content"> <com:TTextBox ID="text1" /> <com:TRegularExpressionValidator ID="validator1" ControlToValidate="text1" ErrorMessage="*" PatternModifiers="u" RegularExpression="[\x0400-\x04FF ]{2,60}" /> <com:TButton ID="button1" Text="Submit!"/> </com:TContent>